What does IOS stand for?
IOS stands for "ISDN Operational Software"
How to abbreviate "ISDN Operational Software"?
"ISDN Operational Software" can be abbreviated as IOS
What is the meaning of IOS abbreviation?
The meaning of IOS abbreviation is "ISDN Operational Software"
What does IOS mean?
IOS as abbreviation means "ISDN Operational Software"
